The Windows Phone 8.1 SDK was released with a bang at the beginning of April 2014 and the OS update arrived later that year. It brought lot of new to the Windows Phone ecosystem, but also caused a noticeable disarray to the Windows Phone community and to the community of developers as well. Some features in WP8.1 are definitely great and improving, some are just worrisome, and some features in WP8.1 SDK are simply missing, even though they were in WP8.

Let's take a look on the WP8.1 SDK nine months after the original release, what improvements it brought and also what's still not there.

In this dev article about Windows Phone 8.1 SDK, 9 month later I'll summarize in few bullet points the most interesting features of this OS update and especially what's new for developers.